Improvement in road-wagons



UNIT D STATES PATENT OFFICE.

CYRUS W. SALADEE, OF WASHINGTON, DISTRICT OF COLUMBIA.

IMPROVEMENT IN ROAD-WAGONS.

Specification forming part of Letters Patent No- 21'7.70S, dated July22, 1879; application filed February 28, 1879.

To all whom it may concern:

Be it known that I, CYRUS IV. SALADEE, of-

Washington city, in the District of Columbia, have invented certainImprovements in Road- Wagons, of which the following is a specificationembodying my said im'ention.

To enable others skilled in the art to make and use my invention, Iherewith submit the following general description.

My invention is a roadwagon provided with a spring-platform of any ofthe usual construe tions, but so arranged that the number of springsaffording a support for the body will depend upon the extent to whichthe latter is depressed.

In the drawings forming part of this specification, Figure 1 is atransverse section of sufficient of a road-wagon to show my improvement;Fig. 2, a plan, and Fig. 3 a view showin g a modification.

I have illustrated my invention as applied to a triple-spring wagon, theaxles being connected by equalizing frames or levers a Z), pivotedtogether and hung to brackets c c, and

the rear axle and bolster being connected by three semi-ellipticsprings, d d d. The side springs, d d, are secured to the projectingends of the brackets c c, and constitute the permanentsupporting-platform. A cross-bar, 0, connectedto the body, extends belowthe spring (1, and a loop, 0, at the upper side of the crossbar, extendsover the said central spring, but is not in contact therewith when thebody is not depressed, the transverse portion of the loop being coveredwith leather, rubber, or other anti-rattling substance.

The side springs, 61 d, are sufficiently strong and stiff to afford anelastic easy support for the body when not heavily weighted; but whenthe load is increased the loop 6 is brought upon the spring d, whichthus re-enforces the others, and thereby affords the additional springsupport required by the increased weight.

It will be seen that this result is obtained without the use ofadditional springs or parts other than those commonly used, and thatwhile the wagon can properly support the heaviest loads, its elasticityand easy riding under light loads are not impaired. A like result may beobtained with the parallel side springs, Fig. 3, when the upper springs,d, afford the usual support, and bearings n are brought against thelower springs when the weight is increased.

It will be seen that when the body is depressed the springs andequalizing frames or levers a b vibrate in unison.

I claim-- 1. The combination, with the semi-elliptic springs connectingthe front and rear axles and bolster of a vehicle, of a projectingbearing-piece carried with the body, and arranged to strike the lowerconnecting springor sprin only when the upper part of the spring-plat-;"orm has been depressed, substantially as set orth.

2. In a triple-spring road-Wagon, the combination of thesu1.)porting-springs d d d and equalizing-levers a I), all arranged tooperate in unison, substantially as and for the purpose set forth.

In testimony that I claim the above as my invention I hereunto set myhand this November 23d, 1878.

CYRUS W. SALADEE.

